Insulating metallic surfaces or wires.



UNITED STATES PATENT OFFICE.

JOHN A. HEANY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THETETER-I-IEANY DEVELOPING COMPANY, OF CHARLESTON, VVES'I VIR- GINJA, ANDPHILADELPHIA, PENNSYLVANIA, A CORPORATION OF VEST VIRGINIA.

INSULATING METALLIC SURFACES OR WIRES.

SPECIFICATION forming part of Letters Patent N 0. 715,798, datedDecember 16, 1902. Application filed April 10,1902. Serial No. 102,237.(No model.)

To all whom it may concern: ing lime, such as anhydrated, hydrated, sul-Be it known that I, JOHN A. IIEANY, a citifates, &c.; 3, borateproducts, such as boric o zen of the United States, residing at the cityacid, horate manganese, borate sodium, 860.;

of Philadelphia, in"the county of Philadelphia 4, cohesive material,such as animal and vege- 5 and State of Pennsylvania, have invented oertable alhumens, gluey and gummy materials.

tain new and useful Improvements in Insu- Classes 1, 2, and 3, recitedabove,when comlating Metallic Surfaces or Wires, of which hinedconstitute the amalgam.

the following is a specification. The preparation of such an insulatingcoin- My invention has relation to theinsulation pound is eifectcd bycombining an alumina no ofmetallic surfaces and electric wires. product,lime product, and borate product The principal objects of my inventionare, with a gluey or adhesive material and ashesfirst, to provide aninsulation or covering for tos the base.

electric wires or metallic surfaces which shall For the insulation ofwires or metallic surbe fireproof, waterproof, and in a marked defacesit has been 'found that the best method 15 gree acid proof, and alsosufficiently pliable is to cover the wire with the asbestos and to andadhesive to permit, preferably, of the then apply the albumen aluminatedborate wire or metallic surface being transformed of lime amalgamcomposition thereto. into helices or coils without injuriously af- Theproper-thins and best results of such fecting or impairing theinsulating covering product in application in practice have been 20 ofthe metallic surface or wire; second, to found'to he as follows: lime,two ounces; provide an insulator or insulating compound oxid of alumina,six drains, and kaolin six adapted principally for employment forcovdrains, with boracic acid one-half ounce, and ering electric wires,although susceptible of sulfate of alumina four ounces in solution. usefor other purposes where insulation is As to the solution of the gluesto be added 25 requisite and in various formssuch as in the quantitywill depend upon the use or pursheets, boards, paper tubes, or the like,and, pose of the'mixture with the quantity of asthird, to provide byreason of its composibestos used. tion an insulating compound, or whatcan be Having thus described the nature and obproperly termed an albumenaluminated jects of my invention, what I claim as new,

0 borate of lime amalgam for various purand desire to secure by LettersPatent, is

poses in the art. 1. A product, as an insulating compound,

My invention will be more fully understood consisting of asbestoscombined with an alfrom the following description; but I do not humenaluminated horate of lime amalgam, wish to be understood as limitingmyself to substantially as and for the purposes de- 5 the precisechemicals to be mentioned nor to scribed.

the proportions of such to be stated, as the 2. A product, as aninsulating compound, merit as well as scope of my said inventionconsisting, of asbestos combined with an alconsists, essentially, incombining chemicals bumen aluminated borate lime amalgam and of thecharacter to be recited possessing the a cohesive material,substantially as and for 40 properties'and qualities necessary forchemthe purposes described.

ical union for employment, among other uses, A product, as an insulatingcompound, for insulating metallic surfaces and electric consisting ofasbestos combined with a borate wires. of lime product and an adhesivesubstance,

The base of the compoundis asbestos, and substantially as and for thepurposes de- 5 the other elements or ingredients of the same scribed.

are classified asfollows: 1, aluminaproducts, I. A product, as aninsulating compound, such as sulfate of alumina, oxid of alumina,consisting ofasbcstos combined with adhesive &c.; 2, lime products orcompounds containor gluey material, lime product and borate product,substantially as and for the purposes uct and an alumina product,substantially as I: described. and for the purposes described.

5. A product, as an insulating compound, In testimony whereof I havehereunto set consisting of asbestos, an adhesive and an my signatureinthe presence of twosubscl'ibaluminated borate of lime product,substaning witnesses.

tially as and for the purposes described. JOHN A. I-IEANY.

6. A product, as an insulating compound, Witnesses: consisting ofasbestos, an adhesive glueysub- J. \VALTER DOUGLASS,

stance, lime or lime compounds, borate prod- THoMAs M. SMITH.

